1 files changed, 101 insertions, 0 deletions
diff --git a/boost/metaparse/v1/impl/split_at_c.hpp b/boost/metaparse/v1/impl/split_at_c.hpp
new file mode 100644
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+++ b/boost/metaparse/v1/impl/split_at_c.hpp
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+#ifndef BOOST_METAPARSE_V1_IMPL_SPLIT_AT_C_HPP
+#define BOOST_METAPARSE_V1_IMPL_SPLIT_AT_C_HPP
+
+// Copyright Abel Sinkovics (abel@sinkovics.hu)  2013.
+// Distributed under the Boost Software License, Version 1.0.
+//    (See accompanying file LICENSE_1_0.txt or copy at
+//          http://www.boost.org/LICENSE_1_0.txt)
+
+#include <boost/metaparse/config.hpp>
+#include <boost/metaparse/v1/fwd/string.hpp>
+#include <boost/metaparse/v1/impl/push_front_c.hpp>
+
+#include <boost/preprocessor/arithmetic/add.hpp>
+#include <boost/preprocessor/arithmetic/sub.hpp>
+#include <boost/preprocessor/cat.hpp>
+#include <boost/preprocessor/repetition/enum.hpp>
+#include <boost/preprocessor/repetition/enum_params.hpp>
+#include <boost/preprocessor/repetition/repeat.hpp>
+
+#include <boost/mpl/pair.hpp>
+
+namespace boost
+{
+  namespace metaparse
+  {
+    namespace v1
+    {
+      namespace impl
+      {
+        template <int N, class S>
+        struct split_at_c;
+
+#ifdef BOOST_METAPARSE_VARIADIC_STRING
+        template <int N, char C, char... Cs>
+        struct split_at_c<N, string<C, Cs...>> :
+          boost::mpl::pair<
+            typename push_front_c<
+              typename split_at_c<N - 1, string<Cs...>>::type::first,
+              C
+            >::type,
+            typename split_at_c<N - 1, string<Cs...>>::type::second
+          >
+        {};
+
+        template <char C, char... Cs>
+        struct split_at_c<0, string<C, Cs...>> :
+          boost::mpl::pair<string<>, string<C, Cs...>>
+        {};
+
+        template <char... Cs>
+        struct split_at_c<0, string<Cs...>> :
+          boost::mpl::pair<string<>, string<Cs...>>
+        {};
+#else
+        #ifdef BOOST_METAPARSE_ARG
+        #  error BOOST_METAPARSE_ARG already defined
+        #endif
+        #define BOOST_METAPARSE_ARG(z, n, d) BOOST_PP_CAT(C, BOOST_PP_ADD(n, d))
+
+        #ifdef BOOST_METAPARSE_SPLIT_AT
+        #  error BOOST_METAPARSE_SPLIT_AT already defined
+        #endif
+        #define BOOST_METAPARSE_SPLIT_AT(z, n, unused) \
+          template < \
+            BOOST_PP_ENUM_PARAMS(BOOST_METAPARSE_LIMIT_STRING_SIZE, int C) \
+          > \
+          struct \
+            split_at_c< \
+              n, \
+              string<BOOST_PP_ENUM_PARAMS( \
+                BOOST_METAPARSE_LIMIT_STRING_SIZE, C) \
+              > \
+            > : \
+            boost::mpl::pair< \
+              string<BOOST_PP_ENUM_PARAMS(n, C)>, \
+              string< \
+                BOOST_PP_ENUM( \
+                  BOOST_PP_SUB(BOOST_METAPARSE_LIMIT_STRING_SIZE, n), \
+                  BOOST_METAPARSE_ARG, \
+                  n \
+                ) \
+              > \
+            > \
+          {};
+
+        BOOST_PP_REPEAT(
+          BOOST_METAPARSE_LIMIT_STRING_SIZE,
+          BOOST_METAPARSE_SPLIT_AT,
+          ~
+        )
+
+        #undef BOOST_METAPARSE_SPLIT_AT
+        #undef BOOST_METAPARSE_ARG
+#endif
+      }
+    }
+  }
+}
+
+#endif
+